<!DOCTYPE html>
<html lang="en">
<head>
	<meta charset="UTF-8">
	<title>Document</title>
	<style>
		.box{
			width: 300px;
			height: 300px;
			background-color: #000;
		}
	</style>
</head>
<body>
	<div class="box"></div>
	<script src="../JQuery/jquery-1.11.1.js"></script>
	<script type="text/javascript">
		$(".box").click(function(){
			$(".box").css({"background-color":"#f00"})
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</html>



